Rubber-sole tread



Sept. 8, 1925. 1,552,s32

J. A. FARREN RUBBER soma 'ramm Filed Jan. 25, 1922 & a 'sa v Patented Sept. 8, 1925.

UNITED STATES JOSEPH FARREN, on NnWToN,

I 1,552,s32 PATENT OFFICE.

MASSACHUSETTS, AssIeNoa TO THOS. H. LOGAN oo., or nunsox,` MASSACHUSETTS, A conroaamron on MASSACHUSETTS.

RUBBER-SOLE !mean Application mea January 25, 1922. Serial No. 531,*712.

To all whom it may camera: W

Be it known that I, Josnrn A FARREN,

a citizen oi' the United States, residing at Newton, in the County ot Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Rubber-Sole Treads; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to niake and use the same.

The present invention relates to treads and more particularly to rubber sole treads einbodied in sport shoes.

The object of the present invention is to provide a treacl nore particularly in connection with rubber soles which shall have 'the requisite wearing qualities, which atlords a lirin foundation for the foot, and at the saine tinie shall el'l'ectually prevent slipping relative to' the ground in any direction. In addition to the desired anti-slipping qualities, the present tread is 'ree froni depressiois or recesses of a` character which will cause caked nud to be piclced up by the tre-ad and carried by the wearer.

With this object in View a feature of the present invention contemplates the provision of a sole of rubber or rubber composition having an elongated recess of substantial depth :torn'ed in the ball portion and corresponding in contour generally to the outline or the ball portion of the sole. The edge of this recess consists of a series of circuiar projections connected by substantially straight portions to form a scalloped edge tor the depression which effectually resists slipping in any direction, either lengthwise or transversely ot the tread. Such a treacl is particularly desirable in connection with golf shoes, where it has been found diflicult to provide a forn of tread which will firinly hold the :feet in position during the Swinging of the club, in this position one of the :Feet being;- partly tipped with the weight supported upon either the inner or outer edge of the tread. Located in the central portion of the tread are a series of fiattopped supporting plugs extending upwardly from the bottom of the depression and terininatingat substantially the level o' the outer edge of the tread, these plugs in creasing in diameter froni the toe toward the ball portion of the sole. This construction provides an ideal form of tread in that it furnishes the desired anti-slipping qual. ties which persist throughout substantially the entire life of the sole and at the same time avoids the very great objecton incident to the use of separated recesses of one form or another which pick up cakes of mud and subsequently deposit these akes of dried mud from the shoes of the wearer. In the present Construction if mud collects in the elongated recess the flexing of the sole as the wearer walks causes the mud to be ejected from the recess almost inn'iediately. In the acconpanying drawings illustratnigthe preterred form of the nvention, Fig. l represents a plan View of a sole embodying the features of the invention; Fig. 2 represents a longitudinal section of the sole taken upon the line 2-2 of Fig. l; and Fig. 3 is a cross section of the sole taken upon the line 3-3 of Fig, l. i

Referring to the illustrated embodiment of the invention it will be observed that a sole 10 of rubber or composition is provided in the tread face of the ball portion with an elongated recess 12 having the sane general contour as the sole itself. The edges of this recess or depression are made. up of a series of projecting circular portions 14 connected by slightly curved portions 16, the whole forning in efl'ect a scalloped edge bounding each side of the recess. Located centrally of the recess and extending length wise of the sole are a series of flat top supporting plugs, indicated respectively at 18, 19 and 20 which increase progressively in diameter, the plug nearest the toe portion of the sole having the sinallest diameter and the plug adjacent the ball line having the largest diameter. 'The tread faces of these plugs are at the level of the tread mai-gin of the sole and serve to firnly support the foot of the wearer without interfering With the anti-slipping qualities of the recess 12. The recess or depression extends approxinately half-way or more through the sole and accordingly the anti-slipping features ot' the sole persist throughout substantially the entire life.

It has been found in actual practice that a recess having a scallopededge of this character is superior in its anti-slipping qualities to any other form of construction shown and described it will be understood that this Construction and arrangenient is not essential except so` far as specified in the claim and may be changed or modified without deperting froni the broader features of the invention.

The nvention having been described, what is claimed is:

A sole tread of rubber composition having an elongated recess of substential depth formed in the ball portion and corresponding in contour generally to the Outline of the ball portion of the sole, the side edges of the recess coniprisng a series of circular projections connected by substantially straight portions to 'form a scallop'ed edge, and a plurality of alined flat top supporting plugs gradually increasing in diameter froni the toe toward the ball line of the tread and 10- cated in the recess and extending lengthwise thereof, the plugs being spaced a substantal distance from the side edges of the recess.

J OSEPH A. FARREN. 

